I have a pair of speakers (max power input: 250W, nominal power output: 30W) connected to a class-D amplifier (TDA7492, 2x50W) powered by a 12V 72W power supply.
Playing music on this setup is way too loud.
I have already tried to place a resistor between the amp and each speaker which actually lowers the volume, but I think this is quiet a waste of energy, isn't it?
I want to play music from a raspberry pi later on and I guess it would be better to let the raspberry pi control the volume with a digital potentiometer, instead of controlling it in the music player of the raspberry. So, would a digipot be the answer to my problem?